High-temperature-resistant fluorescent dye and preparation method thereof
By reacting modified fluorescent dyes with transparent polyimide porous microspheres and hydrogen-containing silicone oil, a three-layer core-shell structure was constructed, which solved the problem of easy decomposition and migration of fluorescent dyes at high temperatures and achieved a synergistic improvement in high temperature resistance and high fluorescence efficiency.
Patent Information
- Application Number
- CN202610473170.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-10
- Publication Date
- 2026-06-16
AI Technical Summary
Existing fluorescent dyes are prone to thermal decomposition or fluorescence quenching during high-temperature processing, and they are also prone to diffusion and migration within materials, leading to problems such as color difference and precipitation on the surface of products, which limits their development in high-reliability application fields.
A modified fluorescent dye was prepared by reacting 4-bromo-1,8-naphthalenedicarboxylic anhydride with allylamine and 4-(N,N-dimethylaminosulfonyl)phenylboronic acid pinacol ester. The dye was then reacted with transparent polyimide porous microspheres and hydrogen-containing silicone oil to construct a three-layer core-shell structure of rigid polyimide microspheres-flexible silicone oil segments-fluorescent dye. The fluorescent dye was fixed by hydrosilylation reaction, which enhanced its high-temperature resistance and migration resistance.
This study achieves the stability and efficient luminescence of fluorescent dyes under high-temperature conditions, avoids dye migration and quenching, and improves the durability and fluorescence efficiency of the material.